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963ed931 MS |
1 | /* |
2 | * linux/drivers/s390/crypto/zcrypt_error.h | |
3 | * | |
5432114b | 4 | * zcrypt 2.1.0 |
963ed931 MS |
5 | * |
6 | * Copyright (C) 2001, 2006 IBM Corporation | |
7 | * Author(s): Robert Burroughs | |
8 | * Eric Rossman (edrossma@us.ibm.com) | |
9 | * | |
10 | * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) | |
11 | * Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or modify | |
14 | * it under the terms of the GNU General Public License as published by | |
15 | * the Free Software Foundation; either version 2, or (at your option) | |
16 | * any later version. | |
17 | * | |
18 | * This program is distributed in the hope that it will be useful, | |
19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | * GNU General Public License for more details. | |
22 | * | |
23 | * You should have received a copy of the GNU General Public License | |
24 | * along with this program; if not, write to the Free Software | |
25 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
26 | */ | |
27 | ||
28 | #ifndef _ZCRYPT_ERROR_H_ | |
29 | #define _ZCRYPT_ERROR_H_ | |
30 | ||
31 | #include "zcrypt_api.h" | |
32 | ||
33 | /** | |
34 | * Reply Messages | |
35 | * | |
36 | * Error reply messages are of two types: | |
37 | * 82: Error (see below) | |
38 | * 88: Error (see below) | |
39 | * Both type 82 and type 88 have the same structure in the header. | |
40 | * | |
41 | * Request reply messages are of three known types: | |
42 | * 80: Reply from a Type 50 Request (see CEX2A-RELATED STRUCTS) | |
43 | * 84: Reply from a Type 4 Request (see PCICA-RELATED STRUCTS) | |
44 | * 86: Reply from a Type 6 Request (see PCICC/PCIXCC/CEX2C-RELATED STRUCTS) | |
45 | * | |
46 | */ | |
47 | struct error_hdr { | |
48 | unsigned char reserved1; /* 0x00 */ | |
49 | unsigned char type; /* 0x82 or 0x88 */ | |
50 | unsigned char reserved2[2]; /* 0x0000 */ | |
51 | unsigned char reply_code; /* reply code */ | |
52 | unsigned char reserved3[3]; /* 0x000000 */ | |
53 | }; | |
54 | ||
55 | #define TYPE82_RSP_CODE 0x82 | |
56 | #define TYPE88_RSP_CODE 0x88 | |
57 | ||
58 | #define REP82_ERROR_MACHINE_FAILURE 0x10 | |
59 | #define REP82_ERROR_PREEMPT_FAILURE 0x12 | |
60 | #define REP82_ERROR_CHECKPT_FAILURE 0x14 | |
61 | #define REP82_ERROR_MESSAGE_TYPE 0x20 | |
62 | #define REP82_ERROR_INVALID_COMM_CD 0x21 /* Type 84 */ | |
63 | #define REP82_ERROR_INVALID_MSG_LEN 0x23 | |
64 | #define REP82_ERROR_RESERVD_FIELD 0x24 /* was 0x50 */ | |
65 | #define REP82_ERROR_FORMAT_FIELD 0x29 | |
66 | #define REP82_ERROR_INVALID_COMMAND 0x30 | |
67 | #define REP82_ERROR_MALFORMED_MSG 0x40 | |
68 | #define REP82_ERROR_RESERVED_FIELDO 0x50 /* old value */ | |
69 | #define REP82_ERROR_WORD_ALIGNMENT 0x60 | |
70 | #define REP82_ERROR_MESSAGE_LENGTH 0x80 | |
71 | #define REP82_ERROR_OPERAND_INVALID 0x82 | |
72 | #define REP82_ERROR_OPERAND_SIZE 0x84 | |
73 | #define REP82_ERROR_EVEN_MOD_IN_OPND 0x85 | |
74 | #define REP82_ERROR_RESERVED_FIELD 0x88 | |
75 | #define REP82_ERROR_TRANSPORT_FAIL 0x90 | |
76 | #define REP82_ERROR_PACKET_TRUNCATED 0xA0 | |
77 | #define REP82_ERROR_ZERO_BUFFER_LEN 0xB0 | |
78 | ||
79 | #define REP88_ERROR_MODULE_FAILURE 0x10 | |
80 | ||
81 | #define REP88_ERROR_MESSAGE_TYPE 0x20 | |
82 | #define REP88_ERROR_MESSAGE_MALFORMD 0x22 | |
83 | #define REP88_ERROR_MESSAGE_LENGTH 0x23 | |
84 | #define REP88_ERROR_RESERVED_FIELD 0x24 | |
85 | #define REP88_ERROR_KEY_TYPE 0x34 | |
86 | #define REP88_ERROR_INVALID_KEY 0x82 /* CEX2A */ | |
87 | #define REP88_ERROR_OPERAND 0x84 /* CEX2A */ | |
88 | #define REP88_ERROR_OPERAND_EVEN_MOD 0x85 /* CEX2A */ | |
89 | ||
90 | static inline int convert_error(struct zcrypt_device *zdev, | |
91 | struct ap_message *reply) | |
92 | { | |
93 | struct error_hdr *ehdr = reply->message; | |
94 | ||
963ed931 MS |
95 | switch (ehdr->reply_code) { |
96 | case REP82_ERROR_OPERAND_INVALID: | |
97 | case REP82_ERROR_OPERAND_SIZE: | |
98 | case REP82_ERROR_EVEN_MOD_IN_OPND: | |
99 | case REP88_ERROR_MESSAGE_MALFORMD: | |
100 | // REP88_ERROR_INVALID_KEY // '82' CEX2A | |
101 | // REP88_ERROR_OPERAND // '84' CEX2A | |
102 | // REP88_ERROR_OPERAND_EVEN_MOD // '85' CEX2A | |
103 | /* Invalid input data. */ | |
104 | return -EINVAL; | |
105 | case REP82_ERROR_MESSAGE_TYPE: | |
106 | // REP88_ERROR_MESSAGE_TYPE // '20' CEX2A | |
1749a81d | 107 | /* |
963ed931 MS |
108 | * To sent a message of the wrong type is a bug in the |
109 | * device driver. Warn about it, disable the device | |
110 | * and then repeat the request. | |
111 | */ | |
112 | WARN_ON(1); | |
113 | zdev->online = 0; | |
114 | return -EAGAIN; | |
115 | case REP82_ERROR_TRANSPORT_FAIL: | |
116 | case REP82_ERROR_MACHINE_FAILURE: | |
117 | // REP88_ERROR_MODULE_FAILURE // '10' CEX2A | |
118 | /* If a card fails disable it and repeat the request. */ | |
119 | zdev->online = 0; | |
120 | return -EAGAIN; | |
121 | default: | |
963ed931 MS |
122 | zdev->online = 0; |
123 | return -EAGAIN; /* repeat the request on a different device. */ | |
124 | } | |
125 | } | |
126 | ||
127 | #endif /* _ZCRYPT_ERROR_H_ */ |